CN111389922A - Method for solving water leakage of wide and thick plate CVC roller - Google Patents
Method for solving water leakage of wide and thick plate CVC roller Download PDFInfo
- Publication number
- CN111389922A CN111389922A CN202010146245.0A CN202010146245A CN111389922A CN 111389922 A CN111389922 A CN 111389922A CN 202010146245 A CN202010146245 A CN 202010146245A CN 111389922 A CN111389922 A CN 111389922A
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- Prior art keywords
- roller
- adhesive tape
- wide
- water sealing
- water
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/06—Lubricating, cooling or heating rolls
- B21B27/08—Lubricating, cooling or heating rolls internally
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/06—Lubricating, cooling or heating rolls
- B21B27/08—Lubricating, cooling or heating rolls internally
- B21B2027/083—Lubricating, cooling or heating rolls internally cooling internally
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gasket Seals (AREA)
Abstract
The invention provides a method for solving the problem of water leakage of a wide and thick CVC roller, which is characterized in that a water sealing system is optimized, and the method comprises the steps of improving a water sealing adhesive tape material, improving an installation mode, improving a connection mode and the like. After the method is implemented and popularized, the water leakage phenomenon of the roller can be greatly reduced, the problems of low process hit rate of narrow steel plates, bending of wide and thin plate types and the like are solved, and the economic benefit of enterprises is improved.
Description
Technical Field
The invention relates to an effective solution to the problem of water leakage of a roller, belonging to the technical field of steel manufacturing.
Background
The steel enterprise wide and thick plate factory variety steel proportion is 28%, the wide and thin specification steel plates are 15000 tons per month, the monthly output of the mail steamer plate is 600 tons, and the narrow process hit rate and the plate type yield are important parameters for measuring production indexes. To ensure this index, the roller system must ensure good water sealing effect.
The bakelite water sealing strip of the working roll designed by the existing Simaker has the defects that due to thermal expansion of the roll, the width specification span of a rolled product is large (1870mm to 4850mm), the binding surface is a curve, the difference between a high point and a low point is large, all points of the water sealing strip contacting with the roll surface along the roll body direction cannot be perfectly bound with the roll surface of the roll, a large amount of cooling water flows to the upper surface of a steel plate along the gap between the roll and the water sealing strip, the water accumulation of the steel plate is caused, the hit rate of a narrow process and the yield of a wide and thin specification plate are influenced, the hit rate of the steel plate process is 96.6 percent, and the occurrence rate. Meanwhile, the temperature difference between the head and the tail of the steel plate is large due to water leakage of the roller, the longitudinal same-plate difference of the steel plate is difficult to control, the same-plate difference reaches 0.35-0.5mm and exceeds the range of a standard value, and huge loss is caused to production.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention mainly aims to improve the material and the assembly mode of the water sealing strip, so that the water retaining strip is perfectly attached to the roller surface of the roller, and the water leakage phenomenon is reduced or eliminated.
The invention specifically adopts the following technical scheme:
a method for solving the problem of water leakage of a wide and thick plate CVC roller is characterized in that a water sealing system is optimized, and comprises the following steps:
1) the material of the water sealing adhesive tape is improved: polytetrafluoroethylene is used as a water sealing adhesive tape material;
2) the connection mode of the water sealing adhesive tape is improved: the joint of the adhesive tapes is connected by adopting a buckle structure with an arc-shaped buckle position;
3) the mounting mode of the water sealing adhesive tape is improved: the water sealing rubber strips are uniformly provided with counter bores, each counter bore is provided with a spring, one end of each spring is pressed in the corresponding rubber strip counter bore, and the other end of each spring is pressed on the bottom surface of the groove of the guard plate.
The method provided by the invention optimizes the water sealing system, so that the problem of water leakage of the CVC roller of the wide and thick plate is solved. After the method is implemented, improved and popularized, the water leakage phenomenon of the roller is greatly reduced, and the problems of low process hit rate of narrow steel plates, bending of wide and thin plate types and the like are solved. The estimated process hit rate of the variety steel is improved by 0.35 point, and the annual benefit is 700 ten thousand yuan; the occurrence rate of wide and thin buckling is reduced by 1.01 percent, and the annual benefit is about 90 ten thousand yuan; the qualification rate of the same vertical board difference dimension of the mail steamer board is improved by 3 percent, the annual benefit is 10 ten thousand yuan, and the annual economic benefit can reach 800 ten thousand yuan.
Drawings
FIG. 1 is a prior art connection method of water-sealing rubber strips;
FIG. 2 is a connection mode of the improved water sealing rubber strip;
FIG. 3 is a schematic view showing the installation manner of the prior water-sealing rubber strip, wherein
1. Bolt 2, gasket 3 between bolt and locating pin, adhesive tape 4, locating pin 5, gasket 6 sleeved on locating pin, spring 7, guard plate counter bore 8, adhesive tape counter bore
Detailed Description
The technical solution of the present invention is further described in detail below.
A method for solving the problem of water leakage of a wide and thick plate CVC roller optimizes a water sealing system as follows:
1) the material of the water sealing adhesive tape is improved: polytetrafluoroethylene is used as a water sealing adhesive tape material instead of bakelite.
The polytetrafluoroethylene material has strong plasticity along with the change of the roll shape, and the shape of the polytetrafluoroethylene material is automatically ground into the shape same as that of the roll along with the CVC roll shape after the polytetrafluoroethylene material is used on line, so that the polytetrafluoroethylene material is completely attached and is not easy to deform in a high-temperature environment.
2) The connection mode of the water sealing adhesive tape is improved: due to the limitation of the length of the finished rubber strip, generally, one water sealing rubber strip needs to be formed by connecting more than three rubber strips. Every section adhesive tape connection adopts cut straightly formula connection (as figure 1) before improving, and public first bulge is the rectangle structure, and this kind of connected mode is not inseparable, and the cooling water flows from the gap easily, and the junction loosens easily. After improvement, the joint of the rubber strips adopts a buckle structure (as shown in figure 2) with an arc-shaped buckle position, so that the connection is tighter, the joint is not easy to loosen, and cooling water does not flow out from the gap of the joint.
3) The mounting mode of the water sealing adhesive tape is improved: the water sealing rubber strips are uniformly provided with counter bores, each counter bore is provided with a spring, one end of each spring is pressed in the corresponding rubber strip counter bore, and the other end of each spring is pressed on the bottom surface of the groove of the guard plate.
Original mounting means is as shown in figure 3, correspond on backplate recess and the water sealing adhesive tape and evenly set up the counter bore, and the water sealing adhesive tape is installed into the backplate recess, and locating pin 4 passes water sealing adhesive tape counter bore 8 and fixes in backplate counter bore 7 with bolt 1 and gasket 2 installation, and spring 6 is established to the cover on the locating pin, sets up gasket 5 between spring 6 and the water sealing adhesive tape 3, and the spring can be moved about from top to bottom along the spring force direction with the adhesive tape to guarantee that water sealing adhesive tape and roll surface laminate completely. The setting of locating pin originally prevents the spring skew for fixed spring, but because the locating pin rusts easily, often leads to the spring to warp the card and hinders unable bounce, influences the elasticity effect on the contrary, makes the water sealing adhesive tape can not laminate with the roll surface completely. According to the invention, after the connection mode between the adhesive tapes is improved, the connection is tighter and not easy to loosen, the fixing bolt, the positioning pin and the gasket are omitted, the protection plate counter bore is not required to be correspondingly arranged, and only blind holes are required to be arranged at two ends of the water sealing adhesive tape and are fixed by the positioning pin and the bolt, so that the adhesive tape is prevented from falling off from the two ends. The diameter of the spring is slightly smaller than the maximum inner diameter of the rubber strip counter bore, when the spring is compressed, one end of the spring is pressed in the rubber strip counter bore, and the other end of the spring is pressed on the bottom surface of the groove of the guard plate. The processing depth of the counter bore of the rubber strip is properly adjusted according to the joint force of the rubber strip and the roll surface of the working roll, and the processing method is the prior art.
Preferably, the diameter of the rubber strip counter bore is 22mm, and the depth is 12 mm.
4) Each set of roller is matched with a special guard plate, and each set of guard plate corresponds to a special adhesive tape and cannot be replaced randomly. Each set of rollers needs to use a special matching protection plate due to different running-in conditions of parts such as rubber strips and the like, so that good matching condition is ensured. The adhesive tape is arranged in the groove of the guard plate and is in contact with the roller surface of the roller, so that cooling water is prevented from leaking to the steel plate from the space between the guard plate and the roller surface during online rolling, and the uneven surface temperature of the steel plate is prevented from influencing the plate type control.
During production, the roll diameter of the roll gradually wears. The smaller the roller diameter of the roller is, the larger the thickness of the required rubber strip is. In order to achieve the best water sealing effect, the water sealing adhesive tape is divided into an adhesive tape A and an adhesive tape B (the initial thickness of the adhesive tape is 52mm) according to the abrasion condition of the adhesive tape and the abrasion amount of the roller, and the adhesive force of the adhesive tape and the roller surface is always ensured by the elasticity of the spring along with the gradual reduction of the roller diameter.
Adhesive tape A (thickness 47mm-52mm) use conditions: the roller diameter of the roller is 1110mm-1160 mm;
b rubber strip (thickness 42mm-46mm) use condition: the roller diameter is 1161mm-1210 mm;
when the abrasion loss of the rubber strip exceeds 10mm, the rubber strip is discarded and replaced by a new rubber strip.
5) And (4) inspecting the guard plate adhesive tape after each set of roller is off-line, and replacing or repairing the insufficient elasticity of the spring.
6) After the assembly of each set of roller is finished, the simulated rollers are used on line, water test and acceptance are carried out again before the machine is operated under the condition of actual water sealing, the water sealing integrity of the rubber strips of the protection plates is tested, and zero water leakage of the rollers on the line is ensured.
Claims (7)
1. A method for solving the problem of water leakage of a wide and thick plate CVC roller is characterized in that a water sealing system is optimized, and comprises the following steps:
1) the material of the water sealing adhesive tape is improved: polytetrafluoroethylene is used as a water sealing adhesive tape material;
2) the connection mode of the water sealing adhesive tape is improved: the joint of the adhesive tapes is connected by adopting a buckle structure with an arc-shaped buckle position;
3) the mounting mode of the water sealing adhesive tape is improved: the water sealing rubber strips are uniformly provided with counter bores, each counter bore is provided with a spring, one end of each spring is pressed in the corresponding rubber strip counter bore, and the other end of each spring is pressed on the bottom surface of the groove of the guard plate.
2. The method for solving the problem of water leakage of the wide and thick plate CVC roller according to claim 1 is characterized in that A, B two rubber strips are adopted, different rubber strips are used according to different roller diameters, and specifically:
the adhesive tape A has the thickness of 47mm-52mm and the use conditions are as follows: the roller diameter of the roller is 1110mm-1160 mm;
b, adhesive tape, thickness 42mm-46mm, use condition: the roller diameter is 1161mm-1210 mm.
3. The method for solving the water leakage of the wide and thick plate CVC roller according to claim 1, wherein: after the assembly of each set of roller is finished, the simulated rollers are used on line, water test and acceptance are carried out again before the machine is operated under the condition of actual water sealing, the water sealing integrity of the rubber strips of the protection plates is tested, and zero water leakage of the rollers on the line is ensured.
4. The method for solving the water leakage of the wide and thick plate CVC roller according to claim 1, wherein: each set of roller is matched with a special guard plate, and each set of guard plate corresponds to a special adhesive tape.
5. The method for solving the water leakage of the wide and thick plate CVC roller according to claim 1, wherein: and (4) inspecting the rubber strip of the guard plate after each set of roller is off-line, and when the abrasion loss of the rubber strip exceeds 10mm, scrapping and replacing the rubber strip, and timely replacing or repairing the spring with insufficient elasticity.
6. The method for solving the water leakage of the wide and thick plate CVC roller according to claim 1, wherein: the diameter of the rubber strip counter bore is 22mm, and the depth is 12 mm.
7. The method for solving the water leakage of the wide and thick plate CVC roller according to claim 1, wherein: and blind holes are formed in two ends of the water sealing rubber strip and are fixed by positioning pins and bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010146245.0A CN111389922A (en) | 2020-03-05 | 2020-03-05 | Method for solving water leakage of wide and thick plate CVC roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010146245.0A CN111389922A (en) | 2020-03-05 | 2020-03-05 | Method for solving water leakage of wide and thick plate CVC roller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111389922A true CN111389922A (en) | 2020-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010146245.0A Pending CN111389922A (en) | 2020-03-05 | 2020-03-05 | Method for solving water leakage of wide and thick plate CVC roller |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0765696A1 (en) * | 1995-09-22 | 1997-04-02 | Sms Schloemann-Siemag Aktiengesellschaft | Device for keeping cold rolled strip dry on the outlet of cold rolling and strip plants |
| CN201823752U (en) * | 2010-03-16 | 2011-05-11 | 宝山钢铁股份有限公司 | Roller water draining device |
| CN203778485U (en) * | 2014-02-28 | 2014-08-20 | 北京首钢股份有限公司 | Roller wiping device of rougher mill |
| CN204953532U (en) * | 2015-07-23 | 2016-01-13 | 太仓力达莱特精密工业有限公司 | Roughing is with scraping water board |
| CN205270343U (en) * | 2015-11-27 | 2016-06-01 | 中冶南方工程技术有限公司 | A cut water installation for roll cooling |
| CN207275266U (en) * | 2017-09-04 | 2018-04-27 | 杨小影 | Battery pack chest waterproof adhesive tape |
-
2020
- 2020-03-05 CN CN202010146245.0A patent/CN111389922A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0765696A1 (en) * | 1995-09-22 | 1997-04-02 | Sms Schloemann-Siemag Aktiengesellschaft | Device for keeping cold rolled strip dry on the outlet of cold rolling and strip plants |
| CN201823752U (en) * | 2010-03-16 | 2011-05-11 | 宝山钢铁股份有限公司 | Roller water draining device |
| CN203778485U (en) * | 2014-02-28 | 2014-08-20 | 北京首钢股份有限公司 | Roller wiping device of rougher mill |
| CN204953532U (en) * | 2015-07-23 | 2016-01-13 | 太仓力达莱特精密工业有限公司 | Roughing is with scraping water board |
| CN205270343U (en) * | 2015-11-27 | 2016-06-01 | 中冶南方工程技术有限公司 | A cut water installation for roll cooling |
| CN207275266U (en) * | 2017-09-04 | 2018-04-27 | 杨小影 | Battery pack chest waterproof adhesive tape |
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Application publication date: 20200710 |
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| RJ01 | Rejection of invention patent application after publication |